Improvement in middlings-separators



2 Sheets-Sheet 1.

W. H. GEOHEGAN.

MIDnLINGs sEPARAToR.

INVENTOR (dlt/)ICMA m W By .Httorneys /MWITNESSEMJ WW2 N.PET'ER5, PHOTO-UTHDGRAFHER. WASHINGTON. D C.

2 Sheets-SheetZ W. H. GEOHEGAN. MIDDLINGS SEPARATOR.

No. 1831660. Patented 0ct.24..1876.

' Fz'gf. 62 i O O O WITNESSES INVENTOR l Abm/MMM ".PERS. PHOTO-LITHOGRAFHER. WASHINGTON D C UNITEE STATES PATENT OFFICE.

WILLIAM H. GEOHE'GAN, OF PARIS, ILLINOIS.

IMPROVEMENT IN MlDDLINGS-SEPARATORS.

Specification forming part of Letters Patent No. 183,660, dated October 24, 1876; application filed July 27, 1876.

'l'o all lwhom. it may concern.-

Beit known that I, WILLIAM HENRY GEO- HEGAN, of the city of Paris, in the county of Edgar, and in the State of Illinois, have invented certain new and useful Improvements in Purifying Middlin gs 5 and do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, making a part of this specification.

The nature of my invention consists in the construction and arrangement of a middlingspurifier, as will be hereinafter more fully set forth.

In order to enable others skilled in the art to which my invention appertains to make and use the saine, I will now proceed to describe its construction and operation, referring to the annexed drawings, in which- Figure 1 is a longitudinal vertical section of my middlings-purifier. Fig. 2 is a side elevation of the same.

A represents the main frame or outer case of my middlings-purifier, having at one end two suction-fans, B B', separated by means of a horizontal board, C. Within the main frame A is a shakingframe, D, containing the sieves, which interior frame is supported or suspended by means of spring-arms E E, as shown. H is the hopper, throughl which the middlings are fed into the machine by means of a longitudinally-corru gated roller or cylinder, I. The

middlings fall on the upper sieve G1, where they are subjected to the suction of the fan B, which removes the fine fuzzy ofal. The middlin gs, with the coarse offal, fall on the carrierboard J1 underneath, and are carried to the head of the sieve G2, where they are treated in the same manner, passing over said second sieve, and falling on the second carrier-board J2, by which they are carried to the head of the third sieve G3. In passing over this third sieve G3 the fine middlings go through the sieve and fall on the carrier-board J 3, and are discharged at ot into a spout, K, at the side of the machine. The second and third sieves G2 G3, being relieved from the burden of the coarse mddlin gs and coarse oii'al, purify the fine middlings thoroughly. The coarse middlings and coarse oifal pass over the ends of the three upper sieves Gl G2 G3, falling between the backboards L and the boards M, that connect the sieves with their respective carrier-boards, and fall on the carrier-board J, from whence they are carried to the head of the fourth sieve, G4. In passing over thissieve the middlings go through the sieve, while the offal is discharged over the end of the sieve, and falls on the tail-sieve G. The middlings are carried to the fifth and sixth sieves, G5 and G6, and are treated in the same manner, where any remaining offal is taken out over the ends of the sieves, and the clean middlings are discharged at a. The sieves G4 G5 G6 are provided with the carrier-boards J4 J5 J6, as shown. The tail-sieve G is designed to take out any middlings that may be carried over the other sieves with the offal. The middlings taken out by the tailsieve are discharged at b, the coarse off-al being discharged over the end of said sieve. The lower carrier-board J6 is made in two sections; or, more properly speaking, it has an auxiliary carrier-board, J7, which is movable, being attached to handles N extend ing to the front and fastened by keys, by which means said movable carrier board may be drawn forward, and the middlings that come through the rear part of the lower sieve fall on the rear part of the carrier-board J6 and be discharged at d. This carrier-board has a convex upper surface, which, when the slide J7 is withdrawn, suffers the material falling through the rear portion of the screen G6 to descend through the opening d, while the material falling through the forward part of the screen G6 will travel to the opposite end of the carrier-board. In the front end of the main frame A are six valves, O, one for each of the six screens, to regulate the current of air going to the sieves, said valves to be closed or opened as the machine needs less or more air. These valves are hinged at their lower edges, opening inward, and each valve is provided with a hinged rack-bar, h', taking into a slotted plate, f, for holding the valve at any angle desired. On the fan-cases are also valves P P, to aid in controlling the amount of air. The motion is given to the interior frame D by a shaft, B, running horizontally across the front end of the machine, the boxes or bearings being attached to the main frame. On

this shaft are eccentrics, connected, by bars S, with the frame D, and on one end of the shaft is a driving-pulley, and ou the other end another pulley for driving one of the fans, the other fan being driven from the rst one. V V are knockers, arranged in an uprightbar, W, on the outside of the machine, and extending over the sieves. These knockers are operated by means of an eccentric, '5, on the hub of a wheel, T, actuating a spring-bar, Y, which moves the bar W, the object of the knockers being to keep the meshes of the sieves open.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination of the knockers V, bars sub'stantially'r as ald for the lpurposes herein set forth.

2. In combination with the series of sieves and carrier-boards, the tail-board G, and movable auxiliary carrier-board ,JL having convex upper surface, attached to handles N, extending to the front of the machine, as and for the purposes hein iset'rth.

In testimony that I claim the foregoing I have hereunto set my hand this 22d day of J une, 1876.

WILLIAM HENRY GEOHEGAN.

Witnesses:

C. L. EVERT, 0. V. J AQUITH. 

